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Description
For this Morrison Museum photo, we have two cranial replicas of the elite theropods that made the Late Jurassic and Late Cretaceous terrifying places to live. In the case of the Allosaurus skull, it has the "Allosaur" label because according to the paleontologist who was acting as tour guide the day I took this (I forget her name, but I know she's good friends with Bob Bakker), the name, "Allosaurus" was given to some fairly scrappy remains in 1877 and the more complete specimens that it's been given to since then were found at different stratigraphic levels thereby making it a wastebasket genus. As for the Tyrannosaurus Rex skull, it's one of the many Stan* replicas:

extinctmonsters.net/2014/02/02…

*Named after Stan Sacrison who discovered the original skeleton close to Buffalo, South Dakota in 1987.

Description
For this Morrison Museum photo, we have two cranial replicas of the elite theropods that made the Late Jurassic and Late Cretaceous terrifying places to live. In the case of the Allosaurus skull, it has the "Allosaur" label because according to the paleontologist who was acting as tour guide the day I took this (I forget her name, but I know she's good friends with Bob Bakker), the name, "Allosaurus" was given to some fairly scrappy remains in 1877 and the more complete specimens that it's been given to since then were found at different stratigraphic levels thereby making it a wastebasket genus. As for the Tyrannosaurus Rex skull, it's one of the many Stan* replicas:

extinctmonsters.net/2014/02/02…

*Named after Stan Sacrison who discovered the original skeleton close to Buffalo, South Dakota in 1987.